<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>背景图片设置</title>
    <style>
        div {
            background-image: -webkit-image-set(url(https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K/r/www/cache/static/protocol/https/soutu/img/camera_new_5606e8f.png) 1x,url(https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K/r/www/cache/static/protocol/https/soutu/img/camera_new_x2_fb6c085.png) 2x);

            background-image: -webkit-image-set(
                    url("11111.png") 1x,
                    url("4324.png") 2x
            );

            background-image: -moz-image-set(url(https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K/r/www/cache/static/protocol/https/soutu/img/camera_new_5606e8f.png) 1x,url(https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K/r/www/cache/static/protocol/https/soutu/img/camera_new_x2_fb6c085.png) 2x);

            background-image: -o-image-set(url(https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K/r/www/cache/static/protocol/https/soutu/img/camera_new_5606e8f.png) 1x,url(https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K/r/www/cache/static/protocol/https/soutu/img/camera_new_x2_fb6c085.png) 2x);

            background-image: -ms-image-set(url(https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K/r/www/cache/static/protocol/https/soutu/img/camera_new_5606e8f.png) 1x,url(https://ss1.bdstatic.com/5eN1bjq8AAUYm2zgoY3K/r/www/cache/static/protocol/https/soutu/img/camera_new_x2_fb6c085.png) 2x);
        }
    </style>
</head>
<body>

</body>
</html>